Method of forming sacks for suspensory bandages.



J. K. TOLES.4

SAOKS FOR SUSPENSOBY BANDAGBS. 10N Hun Alle. 11. 1902.

,APPLIOAT Patented June 8, 1909.

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TINTTE JUSTIN KAY TOLES, OF

CHICAGO, ILLINOIS, ASSIGNOR TO BAUER & BLACK, OF CHICAGO,

ILLINOIS, A CORPORATION OF ILLINOIS.

METHOD OF FORIVIING SAOKS FOR SUSPENSORY BANDAGES.

Specification of Letters Patent.

Patented .Tune 8, 1909.

Application filed August 11, 1902. Serial No. 119,309.

To all whom it 'may concern:

Be it known that I, JUSTIN K. ToLns, citizen of the United States,residing at Chicago, in the county of Illinois, have invented certainnew and useful Improvements in Methods of Forming Sacks for SuspensoryBandages, of which the following is a specification.

This invention relates to a novel method of forming sacks for suspensorybandages, and has for its object to prepare in a simple and expeditiousmanner a seamless sack of the proper shape for bandages of thischaracter and formed so that the direction of strain on the sack in usewill be lengthwise of the fabric.

Another object of the invention is to treat the fabric while the sack isbeing formed so that it will preserve its proper shape in use at alltimes.

The method employed by me consists essentially in arranging a blank oftextile fabric on a forming die of the proper shape and then removingthe wrinkles from that part of the fabric which is to form the sack byironing the fabric transversely across the threads of the fabric,thereby shrinking the textile fibers then setting the fabric by applyingheat and pressure; and finally trimming the edges of the shaped sack toreduce it to the proper form.

In the accompanying drawings Figure 1 illustrates a fabric blank fromwhich the sack is to be formed. Fig. 2 shows theblank on the forming dieand the latter arranged in its relative position to the ironing andsetting devices. Fig. 3 shows the sack after it is removed from theforming die. Fig. 4 is a side elevation showing the completed sack.

In the practice of my method I provide a blank 10 of suitable fabricmaterial such as elastic knit or woven material. The blank is preferablydampened at that part where it is to be curved and is then placed on theforming die 11 in the manner shown in Fig. 2, this forming die beingpreferably provided with hooks or pins 12 at the toev and correspondinghooks or pins 13 at the heel, or other suitable devices, by means ofwhich the fabric can be readily secured thereon. The forming die is thencaused to travel between the heated ironing surfaces 14 which areadjusted close together and eHectually shrink the fabric to conform tothe shape of the die and remove the wrinkles Cook and State of so thatwhen the sack is completed it will a l be properly shrunk and entirelyfree of wrinkles.

The forming die illustrated in the drawings is constructed andespecially shaped to make a sack for suspensory bandages, but it will beunderstood that the shape of the die may be changed to make sacks ofother shapes and for other purposes without. departing from the methodwhich constitutes the invention sought to be protected in thisapplication. This forming die has a short straight edge 15 at the heel16 and a curved edge 17 which connects with the straight edge at 18 andextends entirely around the toe 19. The fabric is shaped on the curvededge 17 of the die to produce the full portion 20 of the completed sack(Fig. 4) and as the die travels between the ironing surfaces in adiagonal direction, the fabric will be shrunk and ironed crosswise ofits length and in a direction extending approximately from the lowestpoint of the curved edge of the die back to the pins 13. By proceedingin this manner the fabric will be thoroughly shrunk and shaped in thedesired sack form and all wrinkles will be removed by the irons. Theirons may be heated in any manner, but are shown in the form of chests21 provided with pipes 22 through which steam is admitted for heatingthem and these heated irons are caused to clamp the fabric underconsiderable pressure after the die has come to rest at the downwardlimit of its movement and thus permanently set the fabric in the shapeto which it has been shrunk and ironed. The ironing operation ispreferably conducted rapidly by causing the die to travel quickly intoits lowest position between the ironing surfaces and then pressure ofthe heated ironing surfaces on the fabric is preferably applied slowlyin order to perinit the escape of the steam which is created by contactof the heated surfaces with the fabric.

When the fabric is removed from the forming die it will be curved andshrunk and smoothly ironed in the shape illustrated in Fig. 3 and it isthen trimmed to produce the completed sack shown in Fig. 4L, the edges23 being bound with tap or other material to prevent stretching. Thesack thus formed will preserve its shape indefinitely as the directionof strain in actual use will extend substantially lengthwise of thefabric.

The fabric will generally contain sufficient moisture to enable it to beshrunk, but I may dampen the whole blank before it is arranged on theformer, although I have found that it is sufficient to dampen that partonly which is arranged over the curved edge of the forming die.

The means employed for carrying my improved method into effect may bechanged as found desirable and I do not in any way limit the inventionto use in connection with any particular means.

It will thus be observed that I prepare the suspensory sack, or otherarticle, in a very simple and expeditious manner and without requiringany preliminar i sewing or treatment except that I prefer to dampen thematerial, when it is too dry, to facilitate the shrinking operation.

suspensory sack made in accordance with my method is free from seams andthereby much heating and ehafng is avoided.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent is l. The method of forming a sack from knit orWoven fabric by loosely folding a blank of such fabric over the convexedge of a forming die so as to leave it in wrinkles thereon, thrustingthe, die with the wrinkled blank thereon edgewise between ironing`surfaces in suitable proximity to each other to iron out the wrinklesand to give a sack shape to the blank, and then clamping the so ironedblank in place on the die in order to set the fabric in its said sackshape by a pressure in excess of that of the ironing operation,substantially as described.

2. The method of forming` a sack from knit or woven fabric by folding ablank of such fabric over the convex edge of a forming die, attaching itto the latter at the edge thereof at two widely separated points, theintermediate portion heilig left unattaehed, ironing the blank on said.ijorn'ling` die on opposite sides thereof by a movement oblique to theline connecting` said points of attachment, in order to remove wrinklesand to give a sack shape to the blank, and clamping the so ironed fabricbetween the ironing snrfaces in order to set it in said sack shape,substantially as described.

JUSTIN KAY TOLES. lVitnesses IVM. O. BELT, HELEN L. PECK.

